The Template Marker is a 2½ inch square of clear durable material that is multi purpose. Easily mark position and direction for embroidery or appliqué. Use for fussy cutting and locating the center of a small square of fabric. Use to cut squares for watercolor or mosaic patchwork. Can be used with a rotary cutter. There is a ¼ inch seam allowance around the edge. Mark through the holes in the ruler. Comes with an instruction leaflet. Can be used in conjunction with other Sewing Revolution Products